MEMPHIS, Tenn. — For 30 years, tourists from around the world have paid money to get a look at two airplanes once owned by Elvis Presley at Graceland in Memphis. Fans enjoy touring the planes for their direct connection to Presley and his jet-setting lifestyle, a sort of touchstone to the life of the King of Rock and Roll and his family.

By April of next year, the planes named Lisa Marie and Hound Dog II could be gone.

Elvis Presley Enterprises, which operates the Graceland tourist attraction, has written to the planes’ owners saying they should prepare to remove the jets from Graceland by next spring.

The planes have been a tourist attraction since the mid-1980s. They had been sold after Presley’s death, and were eventually purchased by OKC Partnership in Memphis.

OKC Partnership and Graceland agreed to bring the two jets to Graceland. The agreement called for OKC Partnership to receive a cut of ticket sales in return for keeping the planes there.

In an April 7 letter to OKC Partnership’s K.G. Coker, Elvis Presley Enterprises CEO Jack Soden says the company is exercising its option to end the agreement and asks Coker “to make arrangements for the removal of the airplanes and the restoration of the site on or shortly after April 26, 2015.”

Their removal could cause an uproar among fans, especially those who visit Graceland every year as part of an annual pilgrimage to events such as Elvis Week and the candlelight vigil commemorating Presley’s death.

Dedicated Elvis fan Paul Fivelson of Algonquin, Illinois, says he expects many fans will be upset to hear the planes may be leaving.

“The people who come to Memphis for Elvis Week like seeing those planes there because it’s just part of the whole aura of what Elvis was about,” Fivelson said Tuesday. “It would be kind of blasphemous to take them away, and I think there are probably a lot of fans who will feel the same way.”

The disclosure also raises questions about the future use of the site where the airplanes now sit, across the street from Presley’s longtime home.

Elvis Presley Enterprises declined immediate comment.

In November, New York-based Authentic Brands Group bought Elvis Presley Enterprises and the licensing and merchandising rights for Presley’s music and image from CORE Media Group. As part of the deal, Joel Weinshanker, founder of the National Entertainment Collectibles Association, acquired the operating rights to Graceland, which attracts about 500,000 visitors each year.